Synthesis, Crystal Structure, and Luminescent Properties of One New Binary Cocrystal Achieved from Aromatic Dicarboxylic Acid and Imine-based Dipyridyl Building Block

Abstract

A new binary cocrystal [C ₂₆ H ₂₀ N ₆ ][C ₁₄ H ₁₀ O ₄ S ₂ ]1 has been synthesized and characterized by IR, elemental analysis, TG technique and X-ray crystallography with N′,N′-bis[1-(pyridin-4-yl)methylidene]benzil dihydrazone and 2,2-dithiosalicylic acid. Analysis of the crystal packing of 1 suggests that there are classical intermolecular O−H···N hydrogen bonds between acid and base components and obvious six types of C−H···π interactions involving aromatic rings of adjacent molecules in the crystal packing. The luminescent properties of the compound 1 were investigated.

Keywords:

• binary cocrystal
• crystal structure
• hydrogen bonds
• luminescent properties

This work was supported by China Postdoctoral Science Foundation, the National Natural Science Foundation of Henan Province, the Foundation for University Youth Key Teacher of Henan Province, the Foundation Co-established by the Province and the Ministry of Henan University and Innovation Experiment Program for University Students of Henan University.